JP2005339469A - Method for replacing management computer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To replace an management computer, without influencing a control computer in operation, and moreover, in a short period. <P>SOLUTION: This method for replacing the management computer is provided with the existing management computer which collects, stores operation data from the control computer 1 which monitors and controls a plant and performs data management; a first LAN 3<SB>1</SB>which connects each control computer with the existing management computer; a newly installed management computer 4 to be newly installed at the time of replacement of the existing management computer; a second LAN 3<SB>2</SB>, which is newly constituted at the time of replacement of the existing management computer and a LAN 5 for replacement, which connects the existing management computer with the newly installed management computer. The method also makes the computer body of the existing management computer function as a gateway and inputs the operation data of the plant to be transmitted from each control computer in a computer body of the newly installed management computer via the first LAN, the existing management computer and the LAN for replacement at the replacement of the existing management computer. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a management computer replacement method in which an existing management computer can be replaced without affecting a control computer operating during plant operation.

  In a normal thermal power plant, plant operation data transmitted from the control computer in real time is stored as a history database for a long period of time. A management computer is provided for the purpose of understanding.

  The conventional management computer is only a small system in which only a specific control computer is connected. However, in recent years, the need for the management computer has increased, and a data transmission line (such as a LAN) installed in a power plant ( (Hereinafter referred to as “LAN”) has developed into a large-scale system that connects to all control computers and common equipment computers in the power plant. When the management computer main unit or peripheral equipment becomes obsolete, it becomes necessary to replace the management computer. In the case of a small management computer, since only a specific control computer is connected, even if the management computer is replaced in accordance with the time when the specific control computer stops, the plant is particularly affected. It never happened.

  However, when all the control computers are connected to the LAN and the operation computer for all the control computers is recorded in a large scale, the number of control computers increases, and the timing of each stop is also different. Therefore, if an attempt is made to replace the management computer in accordance with the stop time of a specific computer, it is inevitable that other control computers that are not scheduled to stop will be affected.

  Usually, when replacing any computer that constitutes a large-scale computer system, what is important is not to affect the operation of other computers that are not scheduled to be shut down and to prevent data loss. To complete the work.

Even in a large-scale computer system equipped with a conventional management computer and control computer, a plant data management device that does not affect the operation of another control computer when replacing the control computer is disclosed in Patent Document 1 or the like. It is disclosed. The contents described in Patent Document 1 include the plant operation data after replacement from the replaced control computer by the new plant data management computer (newly installed management computer) added with the replacement of the unit computer (control computer). On the other hand, the existing plant data collection computer (existing management computer) records the plant data before replacement of the replaced control computer, and continues to record the plant operation data of other control computers that have not been replaced. It is what I did.
JP 2001-67118 A (page 6, FIG. 1)

  As described above, the invention in which data loss is not caused by modification of the management computer accompanying the replacement of the control computer is also described in Patent Document 1, but the control computer by replacing the management computer There has never been a technique to prevent the loss of data in the past, and it was not possible to replace a large-scale management computer without affecting the control computer in operation. In addition, since the stop time of each control computer that controls the plant is 2 to 3 years, the method of replacing the management computer in accordance with the computer stop time can be replaced in a short period (about 10 days). There was also a problem that could not be done.

  The present invention has been made to solve the above-described problems of the background art, and provides a replacement method for a management computer that can be replaced in a short period of time without affecting the operating control computer. The purpose is to do.

  A plurality of control computers that monitor and control the plant, an existing management computer that collects and stores plant operation data from each control computer, and manages the data, and a connection between the control computer and the existing management computer 1 data transmission path, a new management computer newly installed when the existing management computer is replaced, a second data transmission path used when the existing management computer is replaced, and the existing management computer And a data transmission path for replacing the new management computer, and when the existing management computer is replaced, the existing management computer functions as a gateway to transmit the plant operation data sent from each control computer. The computer body of the new management computer through the first data transmission path, the existing management computer, and the replacement data transmission path Characterized in that it input.

  According to the present invention, when replacing a management computer, it is possible to transfer operation data from the existing management computer to the new management computer without affecting the control computer.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a management computer replacement method according to the present invention will be described below with reference to the drawings.

(Embodiment 1) (Claim 1)
First, Embodiment 1 of the present invention will be described with reference to FIG.
FIG. 1 is a configuration diagram of Embodiment 1 according to the replacement method for a management computer of the present invention, and particularly shows a configuration in preparation for replacement.

In FIG. 1, 1 ₁ , 1 ₂ ,... 1 _n are a # 1 control computer, a # 2 control computer,. Reference numeral 2 denotes an existing management computer for storing and managing daily plant data output from the control computers 1 ₁ , 1 ₂ ,... 1 _n as history data in order to grasp the operation history of the plant. and a main body _{2 1} and the data file _{2 2.} And these control computer 1 _1, 1 2, _... are connected by a network data transmission path for example Ethernet LAN3 laid in premises power plant with 1 _n and the computer main body 2 ₁ of the existing management computer 2. The Ethernet LAN 3 is composed of a multi-core metal cable or optical fiber having a regular core and a spare core, and the existing management computer 2 is connected to a first network data transmission path (hereinafter referred to as “outside”) composed of a regular core. Operation data from # 1 control computer 1 ₁ , # 2 control computer 1 ₂ ,... #N control computer 1 _n is input using 31 _{1 (} referred to as a first LAN). On the other hand, the second network data transmission path shown inside constructed with pre-core Toka case 3 ₂ (hereinafter, referred to as the 2 LAN) typically is not used, to replace a computer connected to the network as described below, Or used for maintenance. 4 is a new administration computer includes a computer main body 4 ₁ and the data file 4 _2. Reference numeral 5 denotes a replacement transmission line (hereinafter referred to as “replacement LAN”) used when the existing management computer 2 is replaced, and is composed of, for example, an Ethernet or a twisted pair cable.

The above-mentioned # 1 control computer 1 ₁ , # 2 control computer 1 ₂ ,... #N control computer 1 _n are connected to the Ethernet LAN 3 by a set of two interfaces. For example, the # 1 control computer 1 ₁ is connected to the _first LAN 3 ₁ by the interface 6 ₁₁ and the second LAN 3 ₂ by the interface 6 ₁₂ , and the # 2 control computer 1 ₂ is connected to the first LAN 3 ₁ by the interface 6 ₁₁ and the interface by 6 ₂₂ is connected to the 2LAN3 _{2, 1 n} ♯n control computer in the same manner is connected to a 1LAN3 ₁ by the interface _{6 n1,} also to the 2LAN3 ₂ by the interface _{6 n2.}

On the other hand, the existing management computer 2 is connected via an interface 7A ₁ to the 1LAN3 ₁ Ethernet LAN3, new management computer 4 is connected to the 1LAN3 ₁ Ethernet LAN3 through the interface 7B _1. Furthermore, the existing administration computer 2 is connected via an interface 7A ₂ in the aforementioned replacement for LAN5, new management computer 4 is connected to a replacement for LAN5 through the interface 7B _2.

In the network configured for replacement preparation as described above, in a state before the management computer 2 is replaced, from the # 1 control computer 1 ₁ , # 2 control computer 1 ₂ ,... #N control computer 1 _n operating data outputted plant d1, d2, ... dn are each interface ₆ 11 as shown by the arrow in about 1 minute _period, 6 21, sent from · · · _{6 n1} to the 1LAN3 _1, first 1LAN3 _1, input via the interface 7A ₁ to the computer main body 2 _first managing computer 2, is then stored in the data file 2 ₂ are long term storage. The plant operation data d1, d2,... Dn are used for graph display, various analysis processes, and the like for grasping the plant operation status.

The replacement procedure will be described in the case where the existing management computer 2 is replaced with the new management computer 4 due to aging or the like.
(1) First, a new management computer 4 in which application software for management functions is installed in advance is installed.
(2) Next, both computers are connected by the replacement LAN 5 so that data can be transmitted online between the existing management computer 2 and the new management computer 4.

(3) # 1 control computer 1 ₁ , # 2 control computer 1 ₂ ,... #N for transferring operation data sent from the control computer 1 _n from the existing management computer 2 to the new management computer 4 in, it is necessary to function the computer main body 2 ₁ of the existing administration computer 2 as a gateway. For this, an application program is installed for the gateway of the computer main body 2 ₁ of the existing management computer 2.

(4) After the computer main body 2 ₁ began to act as a gateway, as shown in the process diagram of Figure 2, # 1 control computer 1 _1, # 2 control computer 1 _2, ... # n control use computer _{1 n} operating data d1, d2, ... interface ₆ 11 in about 1 minute period as before replacement initiate _dn, 6 21, and sent from · · · _{6 n1} to the 1LAN3 _1, further first 1LAN3 ₁ the computer main body _{2 1} of the existing management computer 2 that functions as a gateway via an interface 7A _1, interface 7A _2, replacement for LAN 5, and inputs online new administration computer _{4 1} via the interface 7B _2.

Operation data d1, d2, ... dn is then recorded in the data file _{4 2.} Incidentally, past recording data stored over a long period in the data file 2 ₂ of the existing management computer 2, for example, as shown by an arrow de in about 2 second cycle, the computer main body 4 _1, interface 7A _2, for replacement LAN 5, via the interface 7B ₂ are input to the new administration computer _{4 1} online, are recorded in the data file _{4 2.}

(5) By the way, # 1 control computer 1 ₁ , # 2 control computer 1 ₂ ,... #N control computer 1 _n each temporarily suspends operation for maintenance in a period of 2 to 3 years. There is a need. Here it will be described as ♯n control computer 1 _n is the time of maintenance ahead of other machine arrives.

In this case, 7B ₁ and 6 _n2 that have not functioned as an interface until now have an interface function, and at the same time, 6 _n1 that has been functioned as an interface until now becomes a mere connection adapter as the _first LAN 31. Change connection to.

As a result, as shown in the process explanatory diagram of FIG. 3, the operation data dn of the #n control computer 1 _n is sent from the interface 6 _n2 to the second LAN 3 ₂ at a cycle of about 1 minute, and this second LAN 3 ₂ , interface 7 B ₁ to the computer main body 4 _first new administration computer 4 through the input in-line, is recorded in the data file 4 _2.

On the other hand, the operation data d1 and d2 of the # 1 control computer 1 ₁ and # 2 control computer 1 ₂ are sent to the first LAN 3 ₁ from the interfaces 6 ₁₁ and 6 _{21 at a} cycle of about 1 minute as before, and the first LAN 3 ₁ enters the computer main body _{2 1} of the existing management computer 2 that functions as a gateway via an interface 7A _1, interface 7A _2, replacement for LAN 5, is input to the new administration computer _{4 1} via the interface 7B _2, data It is recorded in the file _{4 2.}

(6) A description will now be made ♯2 stop timing control computer 1 ₂ arrives.
Until now, to function 6 ₂₂ that did not function as an interface as an interface to connect change 6 ₂₁ functioning as an interface such that the first 1LAN3 ₁ connection adapter to simultaneously now.

As a result, as shown in the process diagram of Figure 4, operation data d2 of the control computer _{1 2} # 2 is sent to the 2LAN3 ₂ in about 1 minute cycle from the interface _{6 22,} further interface from the first 2LAN3 ₂ through 7B ₁ to newly managing computer 4 ₁ entered online, are recorded in the data file 4 _2. Thereafter, the operation data d2 of the control computer 1 ₂ # 2 is input to the new administration computer 4 ₁ This route is recorded in the data file 4 _2. Incidentally, #n operating data dn of the control computer _{1 n} is the same manner as described above, is sent from the interface _{6 n2} to the 2LAN3 _2, the first 2LAN3 _2, online computer main body _{4 first} new administration computer 4 through the interface 7B ₁ in the input, it is recorded in the data file 4 _2.

On the other hand, the operation data d1 of ♯1 control computer _{1 1,} heretofore and sent from the interface _{6 11} in about 1 minute period similarly to the 1LAN3 _1, first 1LAN3 _1, as a gateway via an interface 7A ₁ computer main body _{2 first} managing computer 2, interface 7A _2, replacement for LAN 5, is input to the new administration computer _{4 1} via the interface 7B _2, is recorded in the data file _{4 2.}

(7) Next, the case where the stop period remaining one ♯1 control computer 1 ₁ arrives.
Until now, to function 6 ₁₂ it was not functioning as an interface as an interface to connect change 6 ₁₁ functioning as an interface at the same time so that the first 1LAN3 ₁ simply connecting adapter.

As a result, as shown in the process diagram of Figure 5, operation data d1 of the control computer _{1 1} is sent from the interface _{6 21} in about 1 minute period to the 2LAN3 _2, the 2LAN3 _2, through the interface 7B ₁ is input to the new managing computer 4 _1, is recorded in the data file 4 _2.

At this time, the other control computers 1 ₂ ,... 1 _n are sent from the interfaces 6 ₂₂ ,... 6 _n2 to the LAN 3 ₂ with a period of about 1 minute, respectively, and are newly installed through the interface 7B ₁ as described above. is input to use the computer 4 _1, is recorded in the data file 4 _2.

In this way, there is no # 1 control computer, # 2 control computer,... #N control computer connected to the existing management computer 2, and the latest operation data is transferred to the new management computer 4, and the existing management computer 2 is installed. after a long period From data to a data file 2 ₂ use computer 2 is migrated to new management computer 4, since the graph display function and analysis functions can be performed with new management computer, removal of existing management computer 2 Thus, the replacement of the existing management computer 2 is completed.

As described above, in this embodiment, when replacing the existing management computer 2, the second LAN is configured using the spare core of the Ethernet LAN, and the new management computer 4 is connected to the second LAN. When each control computer connected to the first LAN is stopped, the connection destination is changed to the second LAN so that the operation data of all control computers is transferred from the existing management computer to the new management computer. Can be changed. For example, as described above, when the #n plant stops due to a weekend stop, only the #n control computer 1 _n is switched to the _second LAN 32, and the remaining # 1 and # 2 plants are connected for 3 months. When there is a situation where the connection destination is to be changed later, the operation data of the plants # 1 and # 2 is transmitted from the existing management computer 2 to the new management computer 4 via the replacement LAN 5. Data for all plants of the power plant can always be recorded in the new management computer 4. As a result, according to the present embodiment, the function of the new management computer can be operated quickly, and the connection destination of the control computer is not changed immediately, but the connection destination is changed according to the situation of the plant. Since the change is made sequentially, it is possible to shift in a short time without affecting other control computers, and the replacement time can be implemented at any time.

  In addition, according to the present embodiment, past long-term recorded data recorded on the existing management computer 2 can be stored online without sucking the past long-term recorded data on the electronic medium and restoring it to the new management computer 4. Can be stored in the new management computer 4.

(Embodiment 2) (Equipped with a transmission procedure converter)
Next, Embodiment 2 of the present invention will be described with reference to FIG.
FIG. 6 is a configuration diagram of Embodiment 2 according to the management computer replacement method of the present invention. This embodiment, with respect to the above-described first embodiment, the transmission protocol computer 4 and the other for the new management ♯1 control computer 1 ₁ of any of the control computer 1 _2, as ♯2 control computer 1 _n If a single only special standards rather than standard, was inserted a transmission protocol converter 8 between the first 2LAN3 ₂ of the special transmission protocol ♯2 control computer 1 ₂ and Ethernet LAN 3, a management This is characterized in that it is adapted to the transmission protocol of the computer and other control computers, and the other configurations are the same, so that the description thereof is omitted.

According to this embodiment, if the transmission protocol is to connect the different control computer to other Ethernet LAN3, since so as to connect the control computer 1 ₂ LAN3 via a transmission protocol converter 8 The transmission protocol converter 8 converts the special transmission into a transmission protocol that can be handled by the newly installed management computer 4, so that it is possible to replace the power plant having the control computer of the special transmission protocol.

  In the above-described embodiment of the present invention, the Ethernet LAN has been described as an example of the data transmission path, but is not limited to the Ethernet. In addition, the second LAN is configured by using a multicore cable or an optical fiber spare core, but the present invention is not limited to this, and a metal cable or optical fiber that is structurally independent from the first LAN is newly added. The second LAN may be configured by laying.

  Furthermore, the existing management computer may function as a gateway by replacing hardware instead of installing an application program in the computer main body of the existing management computer.

The block diagram which shows the replacement method of the management computer which concerns on Embodiment 1 of this invention. Process explanatory drawing which concerns on Embodiment 1 of this invention. Process explanatory drawing which concerns on Embodiment 1 of this invention. Process explanatory drawing which concerns on Embodiment 1 of this invention. Process explanatory drawing which concerns on Embodiment 1 of this invention. The block diagram which shows the replacement method of the management computer which concerns on Embodiment 2 of this invention.

Explanation of symbols

1 ₁ , 1 ₂ ,... 1 _n ; # 1, # 2,... #N control computer, 2; existing management computer, 2 ₁ ; existing management computer, 2 ₂ ; data file, 3; data transmission path (Ethernet LAN), 3 ₁ ; first data transmission path (first LAN), 3 ₂ ; second data transmission path (second LAN), 4; new management computer, 4 ₁ ; new management computer, 4 ₂ ; data Files, 5; replacement data transmission path (replacement LAN), 6; interface, 7; interface, 8; transmission protocol converter.

Claims (6)

A plurality of control computers that monitor and control the plant, an existing management computer that collects and stores plant operation data from each control computer, and manages the data, and a connection between the control computer and the existing management computer 1 data transmission path, a new management computer newly installed when the existing management computer is replaced, a second data transmission path used when the existing management computer is replaced, and the existing management computer And a replacement data transmission line connecting the newly installed management computer,
When the existing management computer is replaced, the existing management computer functions as a gateway, and the plant operation data sent from each control computer is sent to the first data transmission path, the existing management computer, and the replacement data transmission path. A method for replacing a management computer, which is characterized by being input to and recorded in a new management computer.   2. The method of replacing a management computer according to claim 1, wherein an application program is installed in the computer main body of the existing management computer and the computer main body functions as a gateway.   Past recorded data already recorded in the existing management computer is transmitted to the new management computer via the replacement data transmission path, and all data of the existing management computer is newly established online. 2. The method for replacing a management computer according to claim 1, wherein the method is transferred to the management computer.   2. The management computer replacement method according to claim 1, wherein the first data transmission path and the second data transmission path are configured using multi-core metal cables or optical fibers.   5. The method of replacing a management computer according to claim 1, wherein the control computer that has come to a stop time is sequentially connected from the first data transmission path to the second data transmission path. . If the transmission protocol of the control computer does not correspond to the transmission protocol of the new management computer, the transmission protocol between the control computer and the second data transmission path is set so that the transmission protocol of the control computer corresponds to the transmission protocol of the new management computer. 5. The management computer replacement method according to claim 4, wherein a transmission protocol converter is interposed in the management computer.

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